final defne(arg0: AnyRef): Boolean

final defnotify(): Unit

final defnotifyAll(): Unit

Provides a constructor for a Difference that removes the files from the previous run on a call to 'clean' and saves the
hash/last modified time of the files as they are after running the function.

Provides a constructor for a Difference that removes the files from the previous run on a call to 'clean' and saves the
hash/last modified time of the files as they are after running the function. This means that this information must be evaluated twice:
before and after running the function.